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Hyperthyroidism Symptoms in Infant

Updated at: May 01, 2014
Written by: Ariba KhaliqPublished at: Sep 05, 2012
Hyperthyroidism Symptoms in Infant

Hyperthyroidism in infants: Hyperthyroidism in infants can cause many growth complications and along with that, there are many symptoms that you can notice immediately. As early diagnosis of essence, it is important that you are aware of these sym

Thyroid releases a hormone called thyroxine which is responsible for the fast or slow working of all bodily systems. In hyperthyroidism, the thyroid gland produces this hormone in excess. In infants, hyperthyroidism is usually the result of a condition in mother called Graves’ disease. The antibodies in her body, which are responsible for stimulation of thyroid for producing thyroxine in excess, bypass the placental wall and end up stimulating the same condition in the baby’s thyroid. The hyperthyroidism symptoms in children are different to those in adults. [Read: What is Hyperthyroidism?]


Symptoms of hyperthyroidism in children

Due to hyperthyroidism in mother, the child can end up having the same disease and likewise, similar symptoms. Some of the most common symptoms associated with hyperthyroidism are problems in growth leading to reduced height and weight. Some of the growth-related symptoms of hyperthyroidism in children include: [Read: Symptoms of Hyperthyroidism]

  • lack of muscle tone, in other words the infant looks floppy.
  • poor feeding
  • puffy face
  • low hairline
  • dull look
  • dry and brittle hair
  • short height.


Some symptoms of hyperthyroidism that cause lot of discomfort to infants include:

  • constipation
  • episodes of choking
  • jaundice
  • sluggishness
  • choking episodes
  • constipation
  • dry, brittle hair
  • jaundice
  • Lack of muscle tone (floppy infant)
  • low hairline
  • poor feeding
  • short height
  • sleepiness
  • thickened tongue that sticks out
  • sluggishness.


The infant has a puffy face with a thickened tongue sticking out. This is one of the most noticeable symptoms of hyperthyroidism in kids. This condition is bound to get worse as the disease grows worse.

Other symptoms of hyperthyroidism in children


In very severe case of hyperthyroidism in children, many problems other than those related to growth can occur. Some of these are:

  • impaired intellect
  • craniosynostosis, i.e. a condition in which the cranial sutures fuse permanently
  • difficulty in concentration
  • increased appetite
  • excess sweating
  • intolerance to heat
  • goiter
  • fatigue
  • delay in puberty


Early diagnosis of the condition is critical to the success rate of the treatment. Infants who get treatment in the first month of their life usually go on to lead a life of normal intelligence. As it is the case with many other diseases, early diagnosis is very important for treatment of the condition. You need to be very vigilant when caring for your baby, especially if you are suffering from Graves’ disease. The symptoms mentioned here are very noticeable and you should particularly be watchful for thickened tongue and fluffy face as these two cannot be missed even by laymen. [Read: Diagnosis of Hyperthyroidism]


Read more articles on thyroid




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